The sense of hearing in human is as a result of a sound wave that enters through the outer, passes the middle ear, this vibrating the bones of the skull slightly before it enters the inner ear. BAHA is relatively the most commonly used hearing aid, which stands for Bone Anchored Hearing Aid. It uses the principle of vibrating the bones of the skull for conduction. BAHA bypasses the outer and middle ear to send a signal to the auditory nerve and inner ear.
In the case of a cochlear implant, it works by making use of some minute canals referred to as cochlear to conduct sound even directly to the auditory nerve, bypassing the inner ear. The major difference is that BAHA functions just as the inner ear should have; it just bypasses the outer and middle ear. The cochlear implant functions in respect of the implant that is surgically planted in the cochlear and an auditory nerve that is still functioning, but it bypasses the outer, middle, and inner ear.